全時四驅是什麼意思？——What does full time 4WD mean?

 

全時四驅意思是指任何時候都是四輪驅動的模式。

全時四驅是通過一個柔性連接的中央差速器，將發動機輸出扭矩按照固定的比例分配到前後輪，全時四驅的優點是能隨時擁有較好的越野和操控性能，缺點是不能根據路面情況做出扭矩分配的調整，並目比較費油。

 

四驅和二驅的區別有:

1.驅動輪不同: 四驅是由車輛的四個車輪驅動，而二驅主要由車輛的前輪或後輪驅動。

2.種類不同:四驅又可分為三種類型，分別為全小時四驅、分時四驅和適時四驅，而二驅可分為前輪驅動和後輪驅動

3.驅動方式不同:二驅是指只有兩個車輪是驅動輪，連接車輛的動力系統，而四驅是指車輛在行駛中-直保持四輪驅動的形式。

4.油耗不同:四驅的驅動模式能隨時擁有較好的越野和操控性能，但不能根據路面狀況調整扭矩分配並且油耗較高，而二驅的油耗就沒有四油耗高。

5.差速器數量不同: 汽車差速器可實現左、右(或前、後)驅動輪實現以不同轉速轉動的機構，在四驅的情況下，為了驅動四個車輪，必須連接所有的車輪，如果將四個車輪機械連接在一起，這時需要加入

中間差速器用以調整前後輪的轉速差，而二驅則只需要連接兩個車輪機械就可以了.6.價格不同: 四驅的價格相對較高，二驅的價格比較便宜。適合場合不同:四驅的動力比較突出，比較適合戶外越野車輛，而二驅更適合在城市道路上行駛，基本上現在常見的家用車輛都是雙驅車。

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All-wheel drive means four-wheel drive at all times. The advantage of all-wheel drive is that you can have better off-road and handling performance at all times, but the disadvantage is that you cannot make adjustments to the torque distribution according to the road conditions, and it is more fuel-efficient.

The differences between four-wheel drive and two-wheel drive are.

1. Different driving wheels: 4WD is driven by the four wheels of the vehicle, while 2WD is mainly driven by the front or rear wheels of the vehicle.

2. Different types: 4WD can be divided into three types, namely all-hour 4WD, time-sharing 4WD and time-dependent 4WD, while 2WD can be divided into front-wheel drive and rear-wheel drive

3. Different driving methods: 2WD means that only two wheels are the driving wheels, connecting the vehicle's power system, while 4WD means that the vehicle is kept in the form of four-wheel drive while driving.

4. Different fuel consumption: 4WD drive mode can always have better off-road and handling performance, but can not adjust the torque distribution according to road conditions and higher fuel consumption, while the fuel consumption of 2WD is not as high as 4 fuel consumption.

5. The number of differentials is different: the differential can achieve the left and right (or front and rear) drive wheels to achieve different rotation speed mechanism, in the case of four-wheel drive, in order to drive four wheels, all the wheels must be connected, if the four wheels are mechanically connected together, it is necessary to add

In the case of 4WD, in order to drive all four wheels, all the wheels must be connected. If the four wheels are mechanically connected together, it is necessary to add an intermediate differential to adjust the speed difference between the front and rear wheels, while 2WD only needs to connect two wheels mechanically. Different occasions: 4WD is more powerful and more suitable for outdoor off-road vehicles, while 2WD is more suitable for driving on city roads, basically all common family vehicles are now 2WD vehicles.